.teacher {
    margin-top: 30px;
    margin-left: 200px;
}

.teacher h3 {
    font-size: 18px;
    color: #a82923;
    padding-bottom: 15px;
    border-bottom: 3px solid #a82923;
   
}
.teacher p{
    color: #666666;
    text-indent: 2em;
    font-size: 21px;
    line-height: 48px;
}
span{
    text-indent: 0;
    font-size: 21px;
    font-family: 仿宋_gb2312;
    font-weight: bold;
    line-height: 48px;
    color: black;

}